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增程弹药提高火炮的射程,除了延长火炮身管、增加药室容量之外,对弹丸的改进也是重要的方面。目前应用于弹丸的增程技术主要是火箭助推技术、弹底排气技术和全膛增程技术。火箭助推技术是最早应用的增程技术,即在弹丸底部加装火箭发动机,通过火箭发动机的适时点火来增加弹丸速度、提高射程。但这种方式存在着很大的不稳定性,如火箭发动机点火的早晚、推力的大小,都会对弹道产生影响。弹底排气技术是通过在弹丸底部加装排气装置,以此破坏弹丸底阻涡流,来增大射程。由于底排装置不会赋予弹丸任何推力,因此与火箭助推技术相比,效果相当稳定,弹
Extended range ammunition to improve the range of artillery, in addition to extending the artillery barrel to increase the capacity of the chamber, the projectile improvement is also an important aspect. Currently used in projectile extended range technology is mainly rocket booster technology, the bottom of the exhaust technology and full bore increased range technology. Rocket booster technology is the earliest application of extended range technology, that is installed at the bottom of the projectile rocket engine, through the rocket engine ignition to increase the projectile speed and improve range. However, this way there is a great instability, such as the rocket engine ignition sooner or later, the size of the thrust, will have an impact on the trajectory. Bottom discharge technology is through the bottom of the projectile exhaust device installed, thereby undermining the projectile resistance swirl, to increase the range. Since bottom-row devices do not give any projectile thrust, the effect is quite stable compared to rocket boosting technology,